Sir·i·us (s r  - s)n. A star in the constellation Canis Major, the brightest star in the sky, approximately 8.6 light-years distant from Earth. Also called Dog Star, Sothis. [Latin S  rius, from Greek Seirios, from seirios, burning.] |
Sirius [ˈsɪrɪəs]
n
(Astronomy & Space / Celestial Objects) the brightest star in the sky after the sun, lying in the constellation Canis Major. It is a binary star whose companion, Sirius B, is a very faint white dwarf. Distance: 8.6 light years Also called the Dog Star Canicula Sothis Related adjs canicular, cynic
[via Latin from Greek Seirios, of obscure origin]
| Sirius (sr-s) The brightest star seen in the night sky. It is in the constellation Canis Major. It is a white main-sequence star on the Hertzsprung-Russell diagram, with an apparent magnitude of -1.5. Sirius is a binary star, and its companion is a white dwarf star referred to as the Pup. Sirius is also known as the Dog Star. Scientific name: Alpha Canis. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  Sirius - the brightest star in the sky; in Canis MajorCanis Major, Great Dog - a constellation to the southeast of Orion; contains Sirius |
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